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$NetBSD: patch-ac,v 1.1.1.1 2009/03/06 12:16:17 hasso Exp $
get_argv0() and get_proc_argv0() functions for NetBSD.
--- osdep-netbsd.c.orig 2009-02-22 16:30:11.000000000 +0100
+++ osdep-netbsd.c
@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifdef __NetBSD__
+
+#include <sys/param.h>
+#include <sys/proc.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
+#include <sys/user.h>
+
+#include <err.h>
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+char *get_argv0(int, char *);
+char *get_proc_argv0(pid_t);
+
+#define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
+
+#define is_runnable(p) \
+ ((p)->p_stat == LSRUN || (p)->p_stat == SIDL)
+#define is_stopped(p) \
+ ((p)->p_stat == LSSTOP || (p)->p_stat == SZOMB)
+
+char *
+get_argv0(int fd, char *tty)
+{
+ int mib[4] = { CTL_KERN, KERN_PROC2, KERN_PROC_PGRP, 0 };
+ struct stat sb;
+ size_t len;
+ struct kinfo_proc2 *buf, *newbuf, *p, *bestp;
+ char *procname;
+ u_int i;
+
+ buf = NULL;
+
+ if (stat(tty, &sb) == -1)
+ return (NULL);
+ if ((mib[3] = tcgetpgrp(fd)) == -1)
+ return (NULL);
+
+retry:
+ if (sysctl(mib, nitems(mib), NULL, &len, NULL, 0) == -1)
+ return (NULL);
+ len = (len * 5) / 4;
+
+ if ((newbuf = realloc(buf, len)) == NULL) {
+ free(buf);
+ return (NULL);
+ }
+ buf = newbuf;
+
+ if (sysctl(mib, nitems(mib), buf, &len, NULL, 0) == -1) {
+ if (errno == ENOMEM)
+ goto retry;
+ free(buf);
+ return (NULL);
+ }
+
+ bestp = NULL;
+ for (i = 0; i < len / sizeof (struct kinfo_proc); i++) {
+ if (buf[i].p_tdev != sb.st_rdev)
+ continue;
+ p = &buf[i];
+ if (bestp == NULL) {
+ bestp = p;
+ continue;
+ }
+
+ if (is_runnable(p) && !is_runnable(bestp))
+ bestp = p;
+ else if (!is_runnable(p) && is_runnable(bestp))
+ continue;
+
+ if (!is_stopped(p) && is_stopped(bestp))
+ bestp = p;
+ else if (is_stopped(p) && !is_stopped(bestp))
+ continue;
+
+ if (p->p_estcpu > bestp->p_estcpu)
+ bestp = p;
+ else if (p->p_estcpu < bestp->p_estcpu)
+ continue;
+
+ if (p->p_slptime < bestp->p_slptime)
+ bestp = p;
+ else if (p->p_slptime > bestp->p_slptime)
+ continue;
+
+ if (strcmp(p->p_comm, p->p_comm) < 0)
+ bestp = p;
+ else if (strcmp(p->p_comm, p->p_comm) > 0)
+ continue;
+
+ if (p->p_pid > bestp->p_pid)
+ bestp = p;
+ }
+ if (bestp != NULL) {
+ procname = get_proc_argv0(bestp->p_pid);
+ if (procname == NULL || *procname == '\0') {
+ free(procname);
+ procname = strdup(bestp->p_comm);
+ }
+ } else
+ procname = NULL;
+
+
+ free(buf);
+ return (procname);
+}
+
+char *
+get_proc_argv0(pid_t pid)
+{
+ int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_ARGS, 0 };
+ size_t size, size2;
+ char *args, *args2, *procname;
+
+ mib[3] = pid;
+ procname = NULL;
+
+ args = NULL;
+ size = 128;
+ while (size < SIZE_MAX / 2) {
+ size *= 2;
+ if ((args2 = realloc(args, size)) == NULL)
+ break;
+ args = args2;
+ size2 = size;
+ if (sysctl(mib, 4, args, &size2, NULL, 0) == -1) {
+ if (errno == ENOMEM)
+ continue;
+ break;
+ }
+ if (size2 > 0 && *args != '\0')
+ procname = strdup(args);
+ break;
+ }
+ free(args);
+
+ return (procname);
+}
+
+#endif
|
